Mall grain size, resulting in that the hydrophilic surface development of pentacene pentacene resulting in a little grain size, high-densityhigh-density grain boundary defects, major to bad carrier transportation. resulting in grain boundary defects, main to bad carrier transportation. The make contact with angles of theangles from the single PVP and WZ8040 custom synthesis High-K PVA/low-K were surfaces have been very similar The speak to single PVP and high-K PVA/low-K PVP surfaces PVP comparable and comparable at 69.03and 66.54 The contact angle ofcontact angle ofand high-K PVP and high-K and comparable at 69.03 and 66.54 . The the single PVP the single PVA/low-K PVP surfaces showed greater hydrophobic activity than thatactivitysinglethat from the single PVA PVA/low-K PVP surfaces showed better hydrophobic of the than PVA surface. Table 2 displays the contact angles of DI water and of DI water and and the surface energies surface surface. Table 2 shows the contact angles diiodomethane diiodomethane and the of gate insulators. The dinsulators. The dispersion and polar elements of polar components energies of gate and p signify d and p signify dispersion and also the surface energy , respectively. It exhibits respectively. It exhibits the surface energy values, 72.57and 50.90, in the surface power , the surface energy values, 72.57 mJ/cm2, 52.95 mJ/cm2, mJ/cm2 mJ/cm2 for High-K PVA, high-K 2 for High-KPVP, and low-K PVP, respectively. The de52.95 mJ/cm2 , and 50.90 mJ/cm PVA/low-K PVA, high-K PVA/low-K PVP, and low-K PVP, respectively. The of your PVA/PVP bilayer of your PVA/PVP bilayer is comparable to creased surface energydecreased surface energyis comparable to that in the PVP layer due that on the PVP layer as a consequence of the removal of H the cross-linking course of action. It really is mentioned that towards the removal of H groups from the PVP by groups from the PVP by the cross-linking method. It really is mentioned of PVA is greater than that of PVA/PVP than that of PVA/PVPlotsPVP the surface vitality the surface vitality of PVA is increased or PVP layers because of or of layers because of is additionally steady with can be constant with the measured make contact with angles OH groups. Itlots of H groups. It the measured get hold of angles in Figure six since the in Figure 6 because the smaller sized the larger surface power. The smaller make contact with angle and smaller sized get in touch with angle represents contact angle represents the greater surface vitality. The smaller contact angle of PVA display the hydrophilic surface with hydrophilic surface with greater surface energyand larger surface power of PVA demonstrate the OH groups, which could OH groups, which interaction inside a more powerful interaction involving the pentacene molecules lead to a stronger could resultbetween the GNF6702 site dielectric surface plus the dielectric surface along with the pentacene molecules inhibit the growth of to inhibit the development of contrast, pentacene all through the deposition to for the duration of the deposition the pentacene grain. While in the pentacene grain. In contrast, pentacene exhibits big grains when grown on the hydrophobic insulator exhibits massive grains when grown over the hydrophobic insulator surface having a higher consurface with a higher get in touch with angle and reduced surface vitality. tact angle and minimal surface power.Figure 6. Cont.Polymers 2021, 13, 3941 Polymers 2021, 13, x FOR PEER REVIEW10 of 14 ten ofFigure six. Contact angles on the different dielectric surfaces: (a) PVA, (b) PVP, and (c) high-K Figure 6. Contact angles from the distinct dielectric surfaces: (a) PVA, (b) PVP, and (c) high-K PVA/ PVA/low-K PVP. low-K PVP. Table two. Contact angles a.
